CVE-2025-48934 (GCVE-0-2025-48934)
Vulnerability from cvelistv5
Published
2025-06-04 19:21
Modified
2025-06-04 19:32
Severity ?
5.5 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CWE
  • CWE-201 - Insertion of Sensitive Information Into Sent Data
Summary
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the `Deno.env.toObject` method ignores any variables listed in the `--deny-env` option of the `deno run` command. When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch.
References
Impacted products
Vendor Product Version
denoland deno Version: < 2.1.13
Version: >= 2.2.0, < 2.2.13
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-48934",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-04T19:32:01.410953Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-04T19:32:14.582Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "deno",
          "vendor": "denoland",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.1.13"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.2.0, \u003c 2.2.13"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the `Deno.env.toObject` method ignores any variables listed in the `--deny-env` option of the `deno run` command. When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-201",
              "description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-04T19:21:17.701Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789"
        },
        {
          "name": "https://github.com/denoland/deno/pull/29079",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/denoland/deno/pull/29079"
        },
        {
          "name": "https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f"
        },
        {
          "name": "https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753"
        },
        {
          "name": "https://docs.deno.com/api/deno/~/Deno.Env.toObject",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.deno.com/api/deno/~/Deno.Env.toObject"
        },
        {
          "name": "https://docs.deno.com/runtime/fundamentals/security/#environment-variables",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.deno.com/runtime/fundamentals/security/#environment-variables"
        }
      ],
      "source": {
        "advisory": "GHSA-7w8p-chxq-2789",
        "discovery": "UNKNOWN"
      },
      "title": "Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-48934",
    "datePublished": "2025-06-04T19:21:17.701Z",
    "dateReserved": "2025-05-28T18:49:07.575Z",
    "dateUpdated": "2025-06-04T19:32:14.582Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-48934\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-06-04T20:15:24.163\",\"lastModified\":\"2025-07-02T13:43:10.557\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the `Deno.env.toObject` method ignores any variables listed in the `--deny-env` option of the `deno run` command. When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch.\"},{\"lang\":\"es\",\"value\":\"Deno es un entorno de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly. En versiones anteriores a la 2.1.13 y la 2.2.13, el m\u00e9todo `Deno.env.toObject` ignora las variables listadas en la opci\u00f3n `--deny-env` del comando `deno run`. Al consultar la documentaci\u00f3n de la opci\u00f3n `--deny-env`, esto podr\u00eda dar la falsa impresi\u00f3n de que las variables listadas en ella son imposibles de leer. El software que utiliza la combinaci\u00f3n de ambos indicadores para acceder a la mayor\u00eda de las variables de entorno, excepto algunas sensibles, ser\u00e1 vulnerable a c\u00f3digo malicioso que intente robar secretos mediante el m\u00e9todo `Deno.env.toObject()`. Las versiones 2.1.13 y 2.2.13 contienen un parche.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-201\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.1.13\",\"matchCriteriaId\":\"68056691-1BB1-4E14-8B25-98CC9CE1AC2F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.2.0\",\"versionEndExcluding\":\"2.2.13\",\"matchCriteriaId\":\"3601EB7D-5985-4B5F-87AE-1F47BA4677D3\"}]}]}],\"references\":[{\"url\":\"https://docs.deno.com/api/deno/~/Deno.Env.toObject\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://docs.deno.com/runtime/fundamentals/security/#environment-variables\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/denoland/deno/pull/29079\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\",\"Patch\"]},{\"url\":\"https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-48934\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-06-04T19:32:01.410953Z\"}}}], \"references\": [{\"url\": \"https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-06-04T19:31:39.056Z\"}}], \"cna\": {\"title\": \"Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables\", \"source\": {\"advisory\": \"GHSA-7w8p-chxq-2789\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"denoland\", \"product\": \"deno\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 2.1.13\"}, {\"status\": \"affected\", \"version\": \"\u003e= 2.2.0, \u003c 2.2.13\"}]}], \"references\": [{\"url\": \"https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789\", \"name\": \"https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/denoland/deno/pull/29079\", \"name\": \"https://github.com/denoland/deno/pull/29079\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f\", \"name\": \"https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753\", \"name\": \"https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://docs.deno.com/api/deno/~/Deno.Env.toObject\", \"name\": \"https://docs.deno.com/api/deno/~/Deno.Env.toObject\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://docs.deno.com/runtime/fundamentals/security/#environment-variables\", \"name\": \"https://docs.deno.com/runtime/fundamentals/security/#environment-variables\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the `Deno.env.toObject` method ignores any variables listed in the `--deny-env` option of the `deno run` command. When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-201\", \"description\": \"CWE-201: Insertion of Sensitive Information Into Sent Data\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-06-04T19:21:17.701Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-48934\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-06-04T19:32:14.582Z\", \"dateReserved\": \"2025-05-28T18:49:07.575Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-06-04T19:21:17.701Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.